We are still in the very early innings of this brand new asset class spreading it's wings and eventually becoming mainstream in the investment world.
We're definitely in the early phases, and its going to explode once we cross that point of no return.
Banks have been looking at crypto for years trying to find their play. I first heard about Ethereum from an aquaintance who works at a bank who was tasked with researching blockchain/cryptocurrencies and their impact on the bank when Ethereum was still just a whitepaper. Behind the scenes they've been thinking through how they could leverage the technology to avoid being swallowed whole, because I think they understand this is disruptive enough it could bring an end to their control over the monetary supply if they don't keep up.
To that end, the EU has PSD2 kicking off in 2019 which requires financial institutions implement a standardized API to enable modernization of the industry, and at that point EU banks will be in a position to start leveraging cryptocurrencies/blockchains very aggressively. By 2020 we'll start to see banking pilot projects come online, and by 2022 we'll be at or approaching that point of no return as more and more asset classes are tokenized and moved onto chains, both private and public.
This is all still baby money, as hard as that may be to believe after last years bull run.